Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 26-03-2021 and time 00:58:40 (Italy) in region 1 km S Borgo Velino (RI)

A magnitude ML 1.7 earthquake occured in region: 1 km S Borgo Velino (RI), on

  • 25-03-2021 23:58:40 (UTC)
  • 26-03-2021 00:58:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4020, 13.0600 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Borgo Velino RI 1 972 972
Castel Sant'Angelo RI 3 1308 2280
Antrodoco RI 3 2588 4868
Micigliano RI 6 127 4995
Cittaducale RI 9 6828 11823
Concerviano RI 11 291 12114
Petrella Salto RI 12 1197 13311
Borbona RI 14 617 13928
Posta RI 14 694 14622
Cantalice RI 15 2755 17377
Cagnano Amiterno AQ 15 1369 18746
Fiamignano RI 16 1413 20159
Longone Sabino RI 16 597 20756
Rieti RI 16 47698 68454
Belmonte in Sabina RI 17 636 69090
Scoppito AQ 17 3727 72817
Rocca Sinibalda RI 18 815 73632
Poggio Bustone RI 18 2055 75687
Varco Sabino RI 18 187 75874
Barete AQ 19 737 76611
Marcetelli RI 19 89 76700
Leonessa RI 20 2435 79135
Pizzoli AQ 20 4326 83461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of L'Aquila (69753 inhabitants)
38 Km E of Terni (111501 inhabitants)
52 Km NE of Guidonia Montecelio (88673 inhabitants)
53 Km NE of Tivoli (56533 inhabitants)
60 Km W of Teramo (54892 inhabitants)
68 Km SE of Foligno (57155 inhabitants)
74 Km NE of Roma (2864731 inhabitants)
78 Km E of Viterbo (67173 inhabitants)
83 Km N of Velletri (53303 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
91 Km W of Chieti (51815 inhabitants)
93 Km NE of Pomezia (62966 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km SE of Perugia (166134 inhabitants)
96 Km NE of Aprilia (73446 inhabitants)
97 Km NE of Fiumicino (78395 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2021-03-25
23:58:40		 42.4018 13.0602 12 2021-07-12
16:55:05		 Bollettino Sismico Italiano INGV 88916001
Reviewed
Rev100 		ML 1.7 2021-03-25
23:58:40		 42.4005 13.0653 13 2021-03-26
00:15:05		 Sala Sismica INGV-Roma 88474441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-25 23:58:40 ± 0.06
Latitude 42.4018 ± 0.0027
Longitude 13.0602 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88916001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 80
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.85346
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 42
Type of magnitude ML
Reference to an origin 88474441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-26 00:15:05

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 43
Type of magnitude ML
Reference to an origin 88916001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-08 12:47:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2021-03-25T23:59:25.63 3.0 undecidable manual S -0.21 0
IV.MC2.EHZ. 2021-03-25T23:58:58.62 0.1 undecidable manual S 10 57.498 91 0.66 77
IV.CERT.HHZ. 2021-03-25T23:58:56.44 0.6 undecidable manual S 187 50.616 92 0.31 45
IV.TERO.HHZ. 2021-03-25T23:58:56.00 0.3 undecidable manual S 61 50.8158 92 -0.16 69
IV.TOLF.HHZ. 2021-03-25T23:58:56.37 0.3 undecidable manual P 247 94.7385 91 0.19 63
IV.MNTT.EHZ. 2021-03-25T23:58:55.43 0.3 undecidable manual P 31 85.248 91 0.72 55
IV.NRCA.HHZ. 2021-03-25T23:58:55.12 0.1 undecidable manual S 5 48.1185 92 -0.33 90
IV.CESX.HHZ. 2021-03-25T23:58:54.56 0.6 undecidable manual S 301 45.0216 92 -0.06 47
IV.MF5.EHZ. 2021-03-25T23:58:53.15 0.1 undecidable manual P 26 72.6717 91 0.37 84
IV.ASSB.HHZ. 2021-03-25T23:58:53.75 0.3 undecidable manual P 335 78.2661 91 0.12 66
IV.CSP1.EHZ. 2021-03-25T23:58:53.44 0.1 undecidable manual P 9 77.4669 91 -0.07 89
IV.CESI.HHZ. 2021-03-25T23:58:52.08 0.1 undecidable manual P 349 68.0763 91 0.02 91
IV.FDMO.HHZ. 2021-03-25T23:58:52.13 0.3 undecidable manual P 2 70.4739 91 -0.29 64
IT.CSO1.HGN. 2021-03-25T23:58:51.79 0.3 undecidable manual S 176 33.4443 93 0.24 71
IV.GAVE.EHZ. 2021-03-25T23:58:51.75 0.3 undecidable manual S 337 34.9428 93 -0.19 71
IV.SMA1.EHZ. 2021-03-25T23:58:51.80 0.3 undecidable manual S 41 33.9438 93 0.13 71
IV.CAMP.HHE. 2021-03-25T23:58:51.14 0.3 undecidable manual S 62 32.1456 93 -0.06 72
IT.MMP1.HGN. 2021-03-25T23:58:50.89 0.1 undecidable manual S 237 30.6471 94 0.09 98
IV.ARRO.EHZ. 2021-03-25T23:58:50.63 0.3 undecidable manual S 309 31.0467 94 -0.28 69
IV.MOMA.HHZ. 2021-03-25T23:58:50.72 0.3 undecidable manual P 318 59.8956 91 -0.08 68
IV.MC2.EHZ. 2021-03-25T23:58:50.32 0.3 undecidable manual P 10 57.498 91 -0.11 69
IV.T1299.EHE. 2021-03-25T23:58:50.77 0.1 undecidable manual S 35 31.5462 94 -0.26 93
IV.MMO1.EHZ. 2021-03-25T23:58:50.67 0.3 undecidable manual P 21 59.2962 91 -0.04 69
MN.AQU.HNE. 2021-03-25T23:58:50.10 0.3 undecidable manual S 101 28.749 94 -0.19 70
IV.TERO.HHZ. 2021-03-25T23:58:49.08 0.3 undecidable manual P 61 50.8158 92 -0.32 66
IV.CERT.HHZ. 2021-03-25T23:58:49.06 0.1 undecidable manual P 187 50.616 92 -0.31 87
IV.CESX.HHZ. 2021-03-25T23:58:49.07 0.1 undecidable manual P 301 45.0216 92 0.57 84
IV.FAGN.HHZ. 2021-03-25T23:58:49.52 0.1 undecidable manual P 109 45.5211 92 0.94 73
IV.NRCA.HHZ. 2021-03-25T23:58:48.62 0.1 undecidable manual P 5 48.1185 92 -0.36 88
IV.SRES.HHZ. 2021-03-25T23:58:48.92 0.3 undecidable manual P 248 48.7179 92 -0.15 68
IV.LNSS.HHZ. 2021-03-25T23:58:48.42 0.1 undecidable manual S 356 22.3554 97 -0.17 97
IV.RM33.EHZ. 2021-03-25T23:58:47.39 0.1 undecidable manual S 47 17.3715 103 0.12 97
IV.T1299.EHE. 2021-03-25T23:58:46.45 0.1 positive manual P 35 31.5462 94 0.02 97
IV.SMA1.EHZ. 2021-03-25T23:58:46.78 0.1 positive manual P 41 33.9438 93 -0.02 97
IV.FIAM.HHZ. 2021-03-25T23:58:46.56 0.1 undecidable manual S 162 15.5733 108 -0.25 93
IV.CAMP.HHE. 2021-03-25T23:58:46.63 0.1 undecidable manual P 62 32.1456 93 0.1 96
IT.MMP1.HGN. 2021-03-25T23:58:46.16 0.3 undecidable manual P 237 30.6471 94 -0.14 70
IT.CSO1.HGN. 2021-03-25T23:58:46.66 0.1 undecidable manual P 176 33.4443 93 -0.07 94
IV.ARRO.EHZ. 2021-03-25T23:58:46.27 0.1 negative manual P 309 31.0467 94 -0.09 96
IV.GAVE.EHZ. 2021-03-25T23:58:46.70 0.1 undecidable manual P 337 34.9428 93 -0.25 92
IV.LNSS.HHZ. 2021-03-25T23:58:45.01 0.1 negative manual P 356 22.3554 97 -0.01 99
MN.AQU.HNE. 2021-03-25T23:58:45.36 0.3 undecidable manual P 101 28.749 94 -0.65 61
IV.FIAM.HHZ. 2021-03-25T23:58:44.10 0.1 undecidable manual P 162 15.5733 108 0.1 100
IV.RM33.EHZ. 2021-03-25T23:58:44.44 0.1 undecidable manual P 47 17.3715 103 0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHE. ML:1.4 0.0001895 0.16 AML other m 2021-03-25T23:58:47.23
IV.RM33.EHE. ML:2.4 0.0018900000000000002 0.36 AML other m 2021-03-25T23:58:47.71
IV.RM33.HNE. ML:2.4 0.0019549999999999997 0.34 AML other m 2021-03-25T23:58:47.71
IV.RM33.EHN. ML:2.2 0.0013700000000000001 0.1 AML other m 2021-03-25T23:58:47.91
IV.RM33.HNN. ML:2.2 0.001385 0.1 AML other m 2021-03-25T23:58:47.91
IV.FIAM.HHN. ML:1.4 0.00020050000000000002 1.3 AML other m 2021-03-25T23:58:47.27
IV.FIAM.HNN. ML:1.6 0.00034271985 0.2688 AML other m 2021-03-25T23:58:48.33
IV.LNSS.HNE. ML:2.1 0.0008612902 0.128 AML other m 2021-03-25T23:58:48.72
IV.LNSS.HHE. ML:2.2 0.0009375 0.14 AML other m 2021-03-25T23:58:48.73
IV.LNSS.HHN. ML:2.2 0.0010045 0.94 AML other m 2021-03-25T23:58:48.83
IV.LNSS.HNN. ML:2.0 0.0006807430500000001 0.1664 AML other m 2021-03-25T23:58:49.36
IV.ARRO.EHE. ML:1.4 0.000127 0.54 AML other m 2021-03-25T23:58:51.01
IV.GAVE.EHN. ML:1.8 0.00022300000000000003 0.28 AML other m 2021-03-25T23:58:52.41
IV.ARRO.EHN. ML:1.6 0.00018099999999999998 0.22 AML other m 2021-03-25T23:58:52.33
IV.SMA1.EHE. ML:1.9 0.0003105 0.42 AML other m 2021-03-25T23:58:52.38
IV.SMA1.EHN. ML:2.0 0.0004 0.8 AML other m 2021-03-25T23:58:52.00
IV.GAVE.HNE. ML:1.8 0.000218677755 0.2304 AML other m 2021-03-25T23:58:52.42
IV.GAVE.EHE. ML:1.7 0.00018449999999999999 1.06 AML other m 2021-03-25T23:58:52.01
IV.CESX.HHN. ML:1.2 0.00004265 0.24 AML other m 2021-03-25T23:58:55.67
IV.TERO.HHN. ML:1.3 0.000056550000000000006 0.12 AML other m 2021-03-25T23:58:56.22
IV.TERO.HHE. ML:1.3 0.00005069999999999999 0.46 AML other m 2021-03-25T23:58:56.64
IV.NRCA.HNN. ML:2.0 0.0002556665 0.1152 AML other m 2021-03-25T23:58:56.76
IV.NRCA.HHN. ML:2.0 0.00028849999999999997 0.1 AML other m 2021-03-25T23:58:56.81
IV.NRCA.HNE. ML:2.2 0.00038279140000000003 1.8592 AML other m 2021-03-25T23:58:56.93
IV.NRCA.HHE. ML:2.2 0.0004375 0.42 AML other m 2021-03-25T23:58:56.94
IV.CESX.HHE. ML:1.2 0.00004505 0.58 AML other m 2021-03-25T23:58:57.32
IV.CERT.HHE. ML:1.0 0.0000249 0.74 AML other m 2021-03-25T23:58:57.67
IV.SRES.HHE. ML:1.0 0.000025849999999999998 0.28 AML other m 2021-03-25T23:58:58.00
IV.MOMA.HHN. ML:1.3 0.0000459 0.18 AML other m 2021-03-25T23:59:00.39
IV.SRES.HHN. ML:1.0 0.00002955 0.52 AML other m 2021-03-25T23:59:00.80
IV.CERT.HHN. ML:1.1 0.00003125 1.76 AML other m 2021-03-25T23:59:00.96
IV.MOMA.HHE. ML:1.6 0.00007575000000000001 0.14 AML other m 2021-03-25T23:59:01.36
IV.FDMO.HHN. ML:1.5 0.000054449999999999995 0.22 AML other m 2021-03-25T23:59:02.61
IV.CESI.HHE. ML:1.6 0.000071 1.68 AML other m 2021-03-25T23:59:03.96
IV.CESI.HHN. ML:1.7 0.0000862 1.68 AML other m 2021-03-25T23:59:03.97
IV.FDMO.HHE. ML:1.6 0.00006939999999999999 0.18 AML other m 2021-03-25T23:59:03.22
IV.MF5.EHN. ML:1.6 0.000058168990000000004 0.1152 AML other m 2021-03-25T23:59:04.50
IV.MF5.EHE. ML:1.7 0.000084487965 0.2688 AML other m 2021-03-25T23:59:04.73
IV.CSP1.EHE. ML:1.9 0.00011596125 0.2304 AML other m 2021-03-25T23:59:05.31
IV.ASSB.HHN. ML:1.3 0.00002825 0.72 AML other m 2021-03-25T23:59:05.16
IV.CSP1.EHN. ML:1.9 0.000107611475 0.3584 AML other m 2021-03-25T23:59:06.39
IV.ASSB.HHE. ML:1.3 0.000028699999999999996 0.68 AML other m 2021-03-25T23:59:06.68
IV.MNTT.EHN. ML:2.1 0.00014512465 0.2176 AML other m 2021-03-25T23:59:10.58
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download